// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_

#include <stdint.h>

#include <map>
#include <memory>
#include <vector>

#include "base/macros.h"
#include "content/browser/indexed_db/indexed_db_backing_store.h"
#include "content/browser/indexed_db/indexed_db_database.h"
#include "content/common/indexed_db/indexed_db_key_path.h"
#include "content/common/indexed_db/indexed_db_metadata.h"

namespace content {

class IndexedDBTransaction;
struct IndexedDBObjectStoreMetadata;

class IndexWriter {
public:
    explicit IndexWriter(const IndexedDBIndexMetadata& index_metadata);

    IndexWriter(const IndexedDBIndexMetadata& index_metadata,
        const IndexedDBIndexKeys& index_keys);

    bool VerifyIndexKeys(IndexedDBBackingStore* store,
        IndexedDBBackingStore::Transaction* transaction,
        int64_t database_id,
        int64_t object_store_id,
        int64_t index_id,
        bool* can_add_keys,
        const IndexedDBKey& primary_key,
        base::string16* error_message) const WARN_UNUSED_RESULT;

    void WriteIndexKeys(const IndexedDBBackingStore::RecordIdentifier& record,
        IndexedDBBackingStore* store,
        IndexedDBBackingStore::Transaction* transaction,
        int64_t database_id,
        int64_t object_store_id) const;

    ~IndexWriter();

private:
    bool AddingKeyAllowed(IndexedDBBackingStore* store,
        IndexedDBBackingStore::Transaction* transaction,
        int64_t database_id,
        int64_t object_store_id,
        int64_t index_id,
        const IndexedDBKey& index_key,
        const IndexedDBKey& primary_key,
        bool* allowed) const WARN_UNUSED_RESULT;

    const IndexedDBIndexMetadata index_metadata_;
    IndexedDBIndexKeys index_keys_;

    DISALLOW_COPY_AND_ASSIGN(IndexWriter);
};

bool MakeIndexWriters(IndexedDBTransaction* transaction,
    IndexedDBBackingStore* store,
    int64_t database_id,
    const IndexedDBObjectStoreMetadata& metadata,
    const IndexedDBKey& primary_key,
    bool key_was_generated,
    const std::vector<IndexedDBIndexKeys>& index_keys,
    std::vector<std::unique_ptr<IndexWriter>>* index_writers,
    base::string16* error_message,
    bool* completed) WARN_UNUSED_RESULT;

} // namespace content

#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_INDEX_WRITER_H_
